* [PATCH] libqos: usb-hcd-ehci: use 32-bit write for config register
@ 2020-06-23 16:18 Paolo Bonzini
2020-06-23 20:56 ` Michael S. Tsirkin
2020-06-24 7:47 ` Thomas Huth
0 siblings, 2 replies; 5+ messages in thread
From: Paolo Bonzini @ 2020-06-23 16:18 UTC (permalink / raw)
To: qemu-devel; +Cc: thuth, kraxel, mst
The memory region ops have min_access_size == 4 so obey it.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
tests/qtest/usb-hcd-ehci-test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tests/qtest/usb-hcd-ehci-test.c b/tests/qtest/usb-hcd-ehci-test.c
index 5251d539e9..c51e8bb223 100644
--- a/tests/qtest/usb-hcd-ehci-test.c
+++ b/tests/qtest/usb-hcd-ehci-test.c
@@ -96,7 +96,7 @@ static void pci_ehci_port_1(void)
static void pci_ehci_config(void)
{
/* hands over all ports from companion uhci to ehci */
- qpci_io_writew(ehci1.dev, ehci1.bar, 0x60, 1);
+ qpci_io_writel(ehci1.dev, ehci1.bar, 0x60, 1);
}
static void pci_uhci_port_2(void)
--
2.26.2
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH] libqos: usb-hcd-ehci: use 32-bit write for config register
2020-06-23 16:18 [PATCH] libqos: usb-hcd-ehci: use 32-bit write for config register Paolo Bonzini
@ 2020-06-23 20:56 ` Michael S. Tsirkin
2020-06-24 5:59 ` Paolo Bonzini
2020-06-24 7:47 ` Thomas Huth
1 sibling, 1 reply; 5+ messages in thread
From: Michael S. Tsirkin @ 2020-06-23 20:56 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: thuth, qemu-devel, kraxel
On Tue, Jun 23, 2020 at 12:18:52PM -0400, Paolo Bonzini wrote:
> The memory region ops have min_access_size == 4 so obey it.
>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Makes sense.
Acked-by: Michael S. Tsirkin <mst@redhat.com>
I assume you are queueing this with the memory core change.
> ---
> tests/qtest/usb-hcd-ehci-test.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tests/qtest/usb-hcd-ehci-test.c b/tests/qtest/usb-hcd-ehci-test.c
> index 5251d539e9..c51e8bb223 100644
> --- a/tests/qtest/usb-hcd-ehci-test.c
> +++ b/tests/qtest/usb-hcd-ehci-test.c
> @@ -96,7 +96,7 @@ static void pci_ehci_port_1(void)
> static void pci_ehci_config(void)
> {
> /* hands over all ports from companion uhci to ehci */
> - qpci_io_writew(ehci1.dev, ehci1.bar, 0x60, 1);
> + qpci_io_writel(ehci1.dev, ehci1.bar, 0x60, 1);
> }
>
> static void pci_uhci_port_2(void)
> --
> 2.26.2
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] libqos: usb-hcd-ehci: use 32-bit write for config register
2020-06-23 20:56 ` Michael S. Tsirkin
@ 2020-06-24 5:59 ` Paolo Bonzini
0 siblings, 0 replies; 5+ messages in thread
From: Paolo Bonzini @ 2020-06-24 5:59 UTC (permalink / raw)
To: Michael S. Tsirkin; +Cc: thuth, qemu-devel, kraxel
On 23/06/20 22:56, Michael S. Tsirkin wrote:
> On Tue, Jun 23, 2020 at 12:18:52PM -0400, Paolo Bonzini wrote:
>> The memory region ops have min_access_size == 4 so obey it.
>>
>> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
>
> Makes sense.
>
> Acked-by: Michael S. Tsirkin <mst@redhat.com>
>
> I assume you are queueing this with the memory core change.
Yes, I am.
Paolo
>> ---
>> tests/qtest/usb-hcd-ehci-test.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/tests/qtest/usb-hcd-ehci-test.c b/tests/qtest/usb-hcd-ehci-test.c
>> index 5251d539e9..c51e8bb223 100644
>> --- a/tests/qtest/usb-hcd-ehci-test.c
>> +++ b/tests/qtest/usb-hcd-ehci-test.c
>> @@ -96,7 +96,7 @@ static void pci_ehci_port_1(void)
>> static void pci_ehci_config(void)
>> {
>> /* hands over all ports from companion uhci to ehci */
>> - qpci_io_writew(ehci1.dev, ehci1.bar, 0x60, 1);
>> + qpci_io_writel(ehci1.dev, ehci1.bar, 0x60, 1);
>> }
>>
>> static void pci_uhci_port_2(void)
>> --
>> 2.26.2
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] libqos: usb-hcd-ehci: use 32-bit write for config register
2020-06-23 16:18 [PATCH] libqos: usb-hcd-ehci: use 32-bit write for config register Paolo Bonzini
2020-06-23 20:56 ` Michael S. Tsirkin
@ 2020-06-24 7:47 ` Thomas Huth
2020-06-24 8:01 ` Paolo Bonzini
1 sibling, 1 reply; 5+ messages in thread
From: Thomas Huth @ 2020-06-24 7:47 UTC (permalink / raw)
To: Paolo Bonzini, qemu-devel; +Cc: kraxel, mst
On 23/06/2020 18.18, Paolo Bonzini wrote:
> The memory region ops have min_access_size == 4 so obey it.
>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> tests/qtest/usb-hcd-ehci-test.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tests/qtest/usb-hcd-ehci-test.c b/tests/qtest/usb-hcd-ehci-test.c
> index 5251d539e9..c51e8bb223 100644
> --- a/tests/qtest/usb-hcd-ehci-test.c
> +++ b/tests/qtest/usb-hcd-ehci-test.c
> @@ -96,7 +96,7 @@ static void pci_ehci_port_1(void)
> static void pci_ehci_config(void)
> {
> /* hands over all ports from companion uhci to ehci */
> - qpci_io_writew(ehci1.dev, ehci1.bar, 0x60, 1);
> + qpci_io_writel(ehci1.dev, ehci1.bar, 0x60, 1);
> }
>
> static void pci_uhci_port_2(void)
Passes "make check-qtest-x86_64" on a s390x host, too:
Tested-by: Thomas Huth <thuth@redhat.com>
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] libqos: usb-hcd-ehci: use 32-bit write for config register
2020-06-24 7:47 ` Thomas Huth
@ 2020-06-24 8:01 ` Paolo Bonzini
0 siblings, 0 replies; 5+ messages in thread
From: Paolo Bonzini @ 2020-06-24 8:01 UTC (permalink / raw)
To: Thomas Huth, qemu-devel; +Cc: kraxel, mst
On 24/06/20 09:47, Thomas Huth wrote:
>>
>> {
>> /* hands over all ports from companion uhci to ehci */
>> - qpci_io_writew(ehci1.dev, ehci1.bar, 0x60, 1);
>> + qpci_io_writel(ehci1.dev, ehci1.bar, 0x60, 1);
>> }
>> static void pci_uhci_port_2(void)
>
> Passes "make check-qtest-x86_64" on a s390x host, too:
>
> Tested-by: Thomas Huth <thuth@redhat.com>
Ah, I see what you mean now, so I'll clarify. Endianness is handled by
the memory core and libqos so for little-endian devices (such as PCI
devices) it's okay. For big-endian using the wrong size would not work,
but it should fail the same on LE and BE hosts. endianness-test checks
that.
Paolo
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-06-24 8:03 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2020-06-23 16:18 [PATCH] libqos: usb-hcd-ehci: use 32-bit write for config register Paolo Bonzini
2020-06-23 20:56 ` Michael S. Tsirkin
2020-06-24 5:59 ` Paolo Bonzini
2020-06-24 7:47 ` Thomas Huth
2020-06-24 8:01 ` Paolo Bonzini
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